|Sr. No.|Name|From|Till|Occupation|
|---|---|---|---|---|
|1.|Padamvir Singh|2009|Current|IAS|
|2.|Rudhra Gangadharan|06/04/2006|02/09/2009|IAS|
|3.|D.S. Mathur|29/10/2004|06/04/2006|IAS|
|4.|Binod Kumar|20/01/2003|15/10/2004|IAS|
|5.|Wajahat Habibullah|08/11/2000|13/01/2003|IAS|
|6.|B.S. Baswan|06/10/1996|08/11/2000|IAS|
|7.|N.C. Saxena|25/05/1993|06/10/1996|IAS|
|8.|B.N. Yugandhar|26/05/1988|25/01/1993|IAS|
|9.|R.N. Chopra|06/06/1985|29/04/1988|IAS|
|10.|K. Ramanujam|27/02/1984|24/02/1985|IAS|
|11.|R.K. Shastri|09/11/1982|27/02/1984|IAS|
|12.|I.C. Puri|16/06/1982|11/10/1982|IAS|
|13.|P.S. Appu|02/08/1980|01/03/1982|IAS|
|14.|G.C.L. Joneja|23/07/1977|30/06/1980|IAS|
|15.|B.C. Mathur|17/05/1977|23/07/1977|IAS|
|16.|Rajeshwar Prasad|11/05/1973|11/04/1977|IAS|
|17.|D.D. Sathe|19/03/1969|11/05/1973|ICS|
|18.|K.K. Das|12/07/1968|24/02/1969|ICS|
|19.|M.G. Pimputkar|04/09/1965|29/04/1968|ICS|
|20.|S.K. Dutta|13/08/1963|02/07/1965|ICS|
|21.|A.N. Jha|01/09/1959|30/09/1962|ICS|

Question: what is the number of directors that held the position of fias?
Answer: 16